Issues
#1 #1 September 1972
#2 #2 November 1972
#3 #3 January 1973
#4 #4 March 1973
#5 #5 May 1973
#6 #6+1 printing June 1973
#7 #7+1 printing July 1973
#8 #8+1 printing August 1973
#9 #9+1 printing September 1973
#10 #10+1 printing October 1973
#11 #11+1 printing November 1973
#12 #12+1 printing December 1973
#13 #13+1 printing January 1974
#14 #14+1 printing February 1974
#15 #15 March 1974
#16 #16 April 1974
#17 #17 May 1974
#18 #18 June 1974
#19 #19 July 1974
#20 #20+1 printing August 1974
#21 #21+1 printing September 1974
#22 #22+1 printing October 1974
#23 #23+1 printing November 1974
#24 #24+1 printing December 1974
#25 #25+1 printing January 1975
#26 #26+1 printing February 1975
#27 #27+1 printing March 1975
#28 #28+1 printing April 1975
#29 #29+1 printing May 1975
#30 #30+1 printing June 1975
#31 #31+1 printing July 1975
#32 #32+2 printings August 1975
#33 #33+2 printings September 1975
#34 #34+1 printing October 1975
#35 #35+1 printing November 1975
#36 #36+1 printing January 1976
#37 #37+1 printing March 1976
#38 #38+2 printings May 1976
#39 #39+1 printing July 1976
#40 #40 September 1976
#41 #41+1 printing November 1976
#42 #42 January 1977
#43 #43 March 1977